Wind turbine gearbox elastic support vibration reduction effect monitoring device and monitoring method

An elastic support, wind turbine technology, applied in the monitoring of wind turbines, wind turbines, motors, etc., can solve the problems of elastic support damage, large calculation errors, impact evaluation, etc., to achieve less parameter variables, reduce calculation errors, and ensure safety. The effect of stable operation

Active Publication Date: 2021-11-23
HUANENG CLEAN ENERGY RES INST
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  • Abstract
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  • Application Information

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Problems solved by technology

Since the operation of wind turbines is easily affected by wind conditions, and its operating parameters are mostly non-stationary and nonlinear, the sampling method above is prone to large calculation errors, which affects the actual evaluation
In addition, when it is detected from the displacement change that there is a problem with the stiffness of the elastic support, it means that the elastic support has been damaged to a certain extent, and there is a certain delay

Method used

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  • Wind turbine gearbox elastic support vibration reduction effect monitoring device and monitoring method
  • Wind turbine gearbox elastic support vibration reduction effect monitoring device and monitoring method
  • Wind turbine gearbox elastic support vibration reduction effect monitoring device and monitoring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like figure 1 As shown, a wind turbine gearbox elastic support vibration reduction effect monitoring device, the wind turbine gearbox includes a gearbox frame 5 and a gearbox 7, a torque arm is installed on the gearbox 7, and the bottoms of the two ends of the torque arm are installed vertically There is an elastic support 6, one end of the elastic support 6 is installed on the gear box frame 5, and the other end is connected with the bottom surface of the torsion arm. It is characterized in that the elastic support damping effect monitoring device of the wind turbine gearbox includes several vibration acceleration Sensors, a vibration acceleration sensor is respectively installed at both ends of the upper surface of the torsion arm, respectively the first vibration acceleration sensor 1 and the second vibration acceleration sensor 2, and a vibration acceleration sensor is respectively installed at the two ends of the gear box frame 5, respectively It is the third vibra...

Embodiment 2

[0038] A method for monitoring the vibration reduction effect of an elastic support of a wind turbine gearbox, comprising the following steps:

[0039] S1. According to the device of Embodiment 1, a vibration acceleration sensor is arranged.

[0040] S2. Collect a set of vibration acceleration sensor signals to obtain a set of vibration acceleration data. Set the sampling frequency of the vibration acceleration sensor before collecting. Considering the calculation amount and monitoring effect comprehensively, the sampling frequency of the four vibration sensors can be set to 3000Hz (the sampling frequency can be set according to the model, but it cannot be lower than 2.5 times the highest meshing frequency) ;

[0041] Considering that the high-frequency vibration of the frame will be aroused during the yaw of the unit against the wind, it is equivalent to adding additional background noise to the third vibration acceleration sensor 3 and the fourth vibration acceleration sens...

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Abstract

The invention discloses a monitoring device and a monitoring method for the vibration reduction effect of an elastic support of a wind turbine gearbox, belonging to the technical field of wind turbine status monitoring. According to the vibration characteristics of the gearbox and the vibration isolation law of the elastic support, the collected signal is filtered and processed. Frequency band monitoring ensures comprehensive monitoring. The collected signals can be filtered and processed in frequency bands to ensure the effectiveness of monitoring, and the effective value of vibration can be compared in frequency bands in a targeted manner, so as to grasp the operating status of the elastic support, so as to ensure the effectiveness of monitoring. The vibration reduction effect can be effectively calculated, and the operating state of the elastic support can be mastered. The calculation involves fewer parameter variables, which can greatly reduce calculation errors and improve robustness; online real-time monitoring of the operating status of the elastic support of the gearbox can prevent damage to the unit caused by the failure of the elastic support, and realize "predictive maintenance" function to ensure the safe and stable operation of the unit.

Description

technical field [0001] The invention belongs to the technical field of wind turbine state monitoring, and relates to a monitoring device and a monitoring method for the elastic support vibration reduction effect of a gearbox of a wind turbine. Background technique [0002] The elastic support mainly plays two roles in the wind turbine: one is to support the gearbox to carry the load of the wind turbine, which requires its rigidity to meet the elastic support not exceeding a certain amount of deformation when the unit is running, so as to ensure the stability of the unit operation The second is vibration reduction and vibration isolation. The spring-damping system composed of elastic supports reduces the impact on the frame during the operation of the gearbox and protects the unit. As the operating time of the unit increases, parts and components will age, and the elastic support plays an important role in protecting the frame. Whether the vibration isolation effect is normal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D17/00
CPCF05B2270/33F03D17/00
Inventor 蔡安民蔺雪峰焦冲李媛林伟荣许扬
Owner HUANENG CLEAN ENERGY RES INST
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